Vibrator.



e. VANDE;

VIBRATOR.

APPLICATION FILED MAR. 25. 1914.

Patented Feb. 22, 1916.

GERARD VANDE, 015 LOS ANGELES, CALIFORNIA.

VIBRATOR.

Application filedMarch 25,

To all whom it may concern:

Be it known that I, GERARD VANDE, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles, State ofCalifornia, have invented new and useful Improvements in Vibrators, ofwhich the following is a specification.

This invention relates to vibrators of the class described in myapplication S. N.

773,803 filed June 16th, 1913; and the present invention has to do withcertain improvements over my vibrator as set forth in said application.In the said application, I describe a vibrator which essentiallyincludes 5 a resilient armature composed of a steel spring and aplurality of soft iron or other laminations, the armature beingsuspended at each end and the steel spring being con- 'tinuous and thearmature laminations being broken centrally; so that the laminationsprovide the armature proper to act under the magnetic influence, and thesteel spring provides the necessary resiliency for quick action. I Oneof the improvements herein set forth 's the provision of means forcausing the steel spring to bend through a larger arc t an in my priorconstruction.

Another improvement herein set forth is the matter of mounting of theends of the armature, to prevent wear and ultimate looseness.

There are several other features of improvement of which I speakindetail hereinafter; reference being had to the accompanying drawings,in which,

igure 1 is an exterior view of my Vibrator, Fig. 2 is a vertical centralsection of the same, Fig. 3 is a section taken as indicated by line 33of Fig. 2, Fig. 4 is a detail section taken as indicated by line 44 ofFig. 2. Fig. 5 is a detail showing the method of mounting the armatureends.

In the drawings, I show my improved form of case at 10, consisting of athin metal body with two caps 11. The magnet 12 is mounted directly uponthe lower cap, this magnet being in the double U-shape with central core13 and lateral pole pieces 14, as described in my prior application.The. winding 15 is preferably paced about the central core; and thiscentral core has a passage 16 through which the brass vibration stem 17extends. The vibration stem is adapted at 18 at its lower end for themounting of a massage or other instrument 19; and

Specification of Letters Patent.

tion 25*, and th ture.

.oted at 44 to the Patented Feb. 22, 1916. 1914. Serial No. 827,078.

at its upper end it connects at 20 with the steel stud 21 which performsthe function of connecting the vibration stem 17 with the armature.

The whole armature is composed of a plurality of preferably soft ironlaminations 25 which extend inwardly to a central nations are broken as2 and 4.-

In Fig. 3 the laminations are shown to end on the dotted line 26. Thestud 21 projects upwardly between the opposing ends of theselaminations, and over the top of the armature there is placed a suitableclip 27, and the stud 21 has a nut 28 adapted to screw down on the clip.A collar 29 on the stud 21 bears upwardly against the lower laminae nutis screwed down so that the laminations are held loosely between thecollar and the clip 27. The inner ends of the laminations are heldtogetherby rivets 70. The nut 28 is screwed down to such a position thatthe laminations are tightly bound between the clip and collar when thearmature is bent downwardly to its lower limiting position; 2'. 6. justabove the magnet core.

point, wherethe lamiis best shown in Figs.

. In practice this looseness amounts to about one sixty-fourth of aninch. This lower lamination 25 and also the uppermost lamination 25",.ispreferably of steel, for the purpose of resisting wear; the intermediatelaminations being preferably of soft iron. Immediately below the lowerlamination 25 there are short laminations 25 which do not extendinwardly as far as the lamina tions 25, ending as is clearly shown inFigs. 2 and 3 at a point somewhat distant from the center of thearmature. Beneath these laminations 25 there are placed the two steelsprings 30 which give resiliency to the arma- The collar 29 which bearsupwardly against the lower lamination 25 is flattened at each side asshown at 29 in Fig. 3, and is confined laterally between the springs 30so that it is thereby prevented from turning.

he whole armature construction is held together at the ends by suitableclips 40 and rivets 41. These clips 40 extend down on each side of thearmature and are pivotally connected at 42 with links 43 which arepivpole pieces 14 of the magnet. The upper ends of the pole pieces 14are beveled as shown at 14, so that the ends of the armature rest at ornear the points designated 45. The pivots 42 are placed around thepivots 42.

lower position to close to the points of bearing 45, so that the pivotalmovement on the points of bearing will coincide with the pivotalmovement The links 43 accommodate any movement other than pivotal of vthe. ends of the armature.

In practical use, the armature, in its central up and down movement,merely moves on the points 45 as pivotal points. There is no, or verylittle, sliding movement; and the movement as'a whole is such that thereis very little wear and very little tendency to looseness of the parts.Whereas an ordinary pivot at the ends of the armature wouldsoon wearloose, this link supported-pivot has very little tendency to wear loose,as has been fully and amply demonstrated by long continuous operation ofmy device. The magnet 15 is supplied with alternating current of theordinary sort or with any intermittent current through a suitable cord50, and the intermittent magnetism of the magnet will attract thearmature, throwing it into rapid vibration. The springs 30 acton thearmature to throw it back to and above the position shown in Fig. 2 froma which it has been attracted by the magnet. The spring acts on thearmature proper through the medium of the short laminations 25. Thedistance between the ends of these laminations being considerable, thespring is allowed to bend through an arc of corresponding length. Inthis manner, short bending of the spring isen'- tirely eradicated; and Ihave found that the spring will practically last indefinitely underordinary conditions of use.

To control the amplitude of armature vibration, I provide a suitableadjustable stop. This stop comprises an adjusting screw having on itsupper end a thumb nut 61 and carrying at its lower end a rubber buffer62. The rubber butter is mounted in a ferrule or collar 63 on the underside of a nut 6A which is permanently mounted upon the lower end of thescrew 60, turning with the I detent 66 extending screw." The screw worksin a nut 65 secured to the under side of the upper cap 11; and with thenut-there is also secured a spring downwardly and pressing against thenut 64. This spring detent has a notch or slot 67, as shown in Fig. 3,andin which the corners of the nut 64: are caught, while the fiat sidesof the nut are engaged by the spring detent 66 as a whole.

shaped magnet with a central core and 1at- These engagements of thespring detent with the nut serve to hold the adjusting screw 60 and thebuffer 62 in any set position. To lengthen the vibration of the armatureit is only necessary to screw the thumb nut 61 upwardly; to shorten thevibration the thumb nut 61 is screwed downwardly.

I claim- 1. A vibrator, comprising a double-U- eral pole extensions, anenergizing-coil for the magnet and a spring armature attached to bothpolar extensions and extending medially over the core, the ends of thearmature pivotally resting on the lateral pole extensions, and means forholding each armature end down on the pole pieces including a clipattached to the armature end, a link pivoted to the pole piece, andpivotal connection between the clip and link approximately co-axial withthe pivotal bearing of the armature on the pole piece.

2. -A vibrator, comprising a double-U- shaped magnet with a central coreand lateral pole extensions on .opposite sides thereof, an energizingcoil for the core, and a spring armature pivotally attached to bothpolarextensions and extending medially over the core, the ends of thearmature pivotally resting on the lateral pole extensions, and means for'holdingeach armature end down on the pole pieces including a clip at.-tached to the armature end, a link pivoted to the pole piece, andpivotal connection between the clip and link approximately coaxial withthe pivotal bearing of the armature on the pole piece.

3. A vibrator, comprising a double-U shaped magnet with a central coreand lateral pole extensions on opposite sides thereof, an energizingcoil for the core, and a spring armature attached to both polarextensions and extending medially over the core, said armaturecomprising a body of soft iron lamina and a fiat strip of spring steel,the ends of the armature pivotally resting on the lateral poleextensions, and means for holding each armature .end down on the polepiecesincluding a clip attached to the armature end, a link pivoted tothe pole piece, and pivotal connection between the clip and linkapproximately co-axial with the pivotal bearing of the armature on thepole piece. 4. A vibrator, comprising a double-U- shaped magnet with acentral core and lateral pole extensions, an energizing coil for themagnet, an armature connected to both polar extensions and extendingmediallyover the core, and spring means for rendering resilient themotion of the armature to and from the central core, the ends of thearmature pivotally resting on the lateral pole extensions, and means forholding each armature end down on the pole pieces including a clipattached to the armature end, a link pivoted to the pole piece, andpivotal connection between the clip and link approximately co-axial withthe pivotal bearing of the armatureon the pole piece.

5. In a device of the class described, a spring-armature supported bymountings at each end and medially free tovibrate, said mountings forthe armature ends including supporting members upon which the armabrokenmedially the armature ends members.

stem passing transversely pivotally rest, and links pivotally connectedto said supporting members and pivotally connected with the armatureends at points approximately co-axial with the pivotal bearings of thearmature endson said members.

6. In a device of the class described, a spring armature supported bymountings at each end and medially iree to vibrate, said armature-"embodying an elongate body and a fiat strip of spring metal continuousfrom end to end of the armature, the body being secured to the flatspring, said mountings for the armature embodying supporting membersupon which pivotally rest, clips attached to the armature ends, andlinks pivotally connected to said supporting members and pivotallyconnected to said clips at points approximately co-axial with the pivotal bearings of the armature ends on said ture ends 7. A vibrator,comprising a double U- shaped magnet with a central core and lateralpole extensions on opposite sides thereof, an energizing coil for thecore, a spring armature attached to both polar extensions and extendingmedially over the core, said armature comprising an elongate body brokencentrally over the core and a flat spring continuous between the pointsof attachment to the lateral pole extensions, the body contacting springbut not at its center, tor stem connected with the body at its centerand not connected with the spring.

8. An armature construction for a vibrator of the character described,embodying a and an applicaspring strip continuous from end to end of thearmature, an elongate body broken centrally and aflixed to the springstrip at its ends, mountings for the ends of the armature leaving thecenter free to vibrate, a through the break in the armature body, and apair of members aflixed to the stem one on each side of the v trally andafiixed to armature body, said members loosely engaging the armaturebody oneach side of the central break.

9. An armature construction for a vibrator ofthe character described,embodying a' spring strip continuous from end to end of the armature, anelongate body broken cenends, mountings for-the ends of the armatureleaving the center free to vibrate, a stem passing transversely throughthe break in the armature body, and a pair of memon each side of hersaflixed to the stem one sald members engaging the armature body,

on each side ofthe central break and belng ad ustable onthe stemmagnetic material broken near the ends with thethe spring strip at its.

so that the looseness of engagement with 'body broken'centrally over thecore and a flat steel spring continuous between the points of attachmentto the lateral pole extensions, the body contacting with the spring nearits end but not in its medial portions, an

applicator stem passing transversely through the break in therarmaturebody, and a pair of members aflixed to the stem one on each side of thearmature body, said members holding the body loosely between them butnot holding the flat spring between them, said members engaging thearmature body on each side of the central break and being adjustable onthe stem so that the looseness of engagement with be Varied.

11. In a vibrator, a vibrating armature the armature body may supportedat each end and medially free to vibrate, said armature including a bodyof medially, a stem passing transversely through the break in the body,and a pair of members on said stem one on each side of the armaturebody, said members extending on each side of the stem and on each sideof the break so as to engage the body on each side of the break, andsaid members loosely engaging the body when in itsnormal unstressedposition.

12. In a vibrator, a magnet with an energizing coil, a vibratingarmature supported at each end and medially free to vibrate over themagnet, said armature including a body of magnetic material brokenmedially, a I

stem passing transversely through the breakin the body, a clip on thestem above the body engaging the upper surface of the body aconsiderable break therein, body engaging the under surface of the bodyon each side of the break therein, the collar distance on each side ofthe and clip loosely holding the body between them, and means foradjusting the distance between the clip and collar to adjust thelooseness of their engagement with the armature body.

f In witness that I claim the have hereunto subscribed my name this 18thWitnesses:

day of March,' 19-14. k I

JAs. H. BALLAGH,

I JAMES T. BARKELEW.

a collar on the stem below the foregoing I

